To lure females into your room and feed them shots with intentions of sexual penetration....similair to how a spider traps their pray and leaves them defenseless...often done by frat brothers and nursing students...

Shit dude did you read the paper Lain got arrested for spider webbing last night....

To saran wrap a room in a fashion resembling that of a spider web. When complete, lines of shaving cream are put on each strand of saran wrap to give it that silky look, which would also make it more of a pain to clean up.

Spider webbing is always a good way to get back at a fellow college student.